When comparing a cold plunge chiller with a classic tub, the key question is how you want to prepare and care for the water. A chiller adds temperature control and powered water treatment. A classic tub relies on cold water and ice.
The short answer
You do not need a chiller to use a cold plunge. Choose a classic tub if you are happy to prepare cold water and ice yourself. Choose a chiller for powered temperature control, filtration, ozone and a built-in ice generator. Our 1-person chiller model costs $3,000 more than the Classic Tub.
What does a cold plunge chiller do?
A chiller circulates the water and cools it to the temperature you set. Our chiller models also have a built-in ice generator, filtration, ozone and Wi-Fi app control, and can hold any temperature from 37°F to 108°F.
Those are equipment features, not a target. If you are new to cold water, Cleveland Clinic suggests starting at 50–59°F, avoiding water below 40°F, staying in for one or two minutes, and keeping any session to five minutes or less. Cleveland Clinic.
So the 37°F setting is what the chiller can do, not a recommendation. Start with that guidance and check the actual water temperature before you get in.
Chiller or ice: what is the difference?
The Classic Tub has no chiller: you fill it with cold water and add ice. The chiller model cools the water and runs its filtration from a standard 110V plug.
| What you are comparing | Classic Tub | With chiller |
|---|---|---|
| How it cools | Cold water and ice | 1HP chiller and built-in ice generator |
| Temperature | You prepare and check it | Set from 37°F to 108°F |
| Water treatment | None built in | Filtration and ozone |
| Power | No power needed | 110V · 1,160W, standard plug |
| Electrician | No Electrician Required | No Electrician Required |
| Price (1-person) | $3,499 | $6,499 |
Source: Daily Saunas product specifications.
Both have a red cedar exterior, a stainless steel interior and an insulated cover, and both can stand indoors or outdoors. Outdoors, keep the cover closed between sessions.
How much ice does a classic tub need?
There is no single number. It depends on how cold your tap water is, how much water you use, the ice you have and the temperature you are aiming for.
Fill the tub, add ice, and check the water with a thermometer before you get in. If it is not where you want it, adjust and measure again. That repeated preparation is the real trade-off against a chiller.
For beginners, aim for Cleveland Clinic's starting range rather than the coldest water you can make: 50–59°F, never below 40°F. Cleveland Clinic.
How much more does a chiller cost?
| Model | Price and cooling | Power |
|---|---|---|
| 1-Person Cedar Ice Bath, Classic Tub | $3,499; cold water and ice | No power needed |
| 1-Person Cedar Ice Bath with Chiller | $6,499; 1HP chiller and ice generator | 110V · 1,160W, standard plug |
| 2-Person Cedar Ice Bath with Chiller | $10,999; built-in chiller and ice generation | 110V · 1,160W, standard plug |
All three are No Electrician Required. The 1-person chiller model costs $3,000 more than the Classic Tub ($6,499 minus $3,499). The extra buys powered cooling, filtration and ozone.
The 2-person chiller bath is a different size, not a simple upgrade. It measures 78.7″ long × 33.2″ wide × 29.7″ high; choose it only if that space and capacity fit your plan.
Think about your routine as well as the price. With a classic tub, ice and water prep are a recurring task. A chiller takes over most of that, but adds a filter, an ozone system and its own maintenance steps.
Is a chiller worth it for your routine?
A classic tub for a simple setup
Choose the 1-Person Cedar Ice Bath if you are happy to prepare the water yourself. It measures 51.2″ long × 35.4″ wide × 27.6″ high, weighs 123.5 lb empty and needs no power.
It has built-in 1/2″ quick-connect fittings for adding a chiller later; check that a chiller's specifications match before you buy one. All our tubs without a chiller are on our ice baths without a chiller page.
A chiller for less hands-on prep
Choose the 1-Person Cedar Ice Bath with Chiller if you want the tub to keep its own temperature. The tub is 39.4″ in diameter and 35″ high, and the separate step unit measures 39.1″ × 22.4″ × 52″, so plan room for both.
It adds three-stage filtration, ozone and a Wi-Fi app. Follow its manual for filter care and water changes.
A two-person bath
The 2-Person Cedar Ice Bath with Chiller costs $10,999 and also includes ice generation, filtration, ozone and a Wi-Fi app on the same 110V · 1,160W standard plug. Measure the full area first, including room to get in and out and move the cover. Both chiller models are on our cold plunge with chiller page.
Does ozone mean maintenance-free water?
No. Filtration and ozone help, but the water still needs care. Canada's National Collaborating Centre for Environmental Health explains that ozone leaves no lasting disinfectant in the water and that cold water slows how well disinfectants work. NCCEH.
That report looks at cold plunges in public settings, not a home manual, but the point carries over: follow your tub's own instructions for cleaning, water changes, filters and any treatment. Do not borrow a schedule or a chemical dose from a different product.
The Classic Tub has no built-in filtration or ozone, so keep it clean and change the water as its instructions describe.
Good to know. Clear-looking water is not the same as clean water. Stick to the care routine in your manual.
Where should you put a cold plunge?
Choose a stable, level spot with a clear path and room for cleaning and service. Outdoors, keep the insulated cover closed between sessions.
The chiller models plug into a standard 110V outlet; the Classic Tub needs no power. The U.S. Consumer Product Safety Commission recommends GFCI protection on outdoor outlets and on outlets within 20 feet of water, and keeping other cords and electrical products at least 5 feet from the water. CPSC.
Pairing it with a sauna? Map both footprints and the path between them, keep towels and dry clothes nearby, and plan a dry place to sit. Our sauna and cold plunge guide covers the routine.
Ice bath or chiller: how should you decide?
Choose the Classic Tub if the $3,499 price and no-power setup suit you and you are comfortable preparing cold water and ice.
Choose the 1-person chiller model at $6,499 if powered temperature control and built-in water treatment are worth the extra $3,000 to you.
Choose the 2-person model at $10,999 when its larger tub fits your space. Want a sauna too? The Outdoor Contrast Therapy Bundle pairs an outdoor traditional sauna with the 1-person chiller bath.
Frequently asked questions
Do you need a chiller for a cold plunge?
No. The Classic Tub uses cold water and ice and needs no power. A chiller is an optional way to keep the water at a set temperature and treat it.
Is 37°F a good starting temperature?
No. The chiller can reach 37°F, but Cleveland Clinic advises staying at or above 40°F and suggests 50–59°F for beginners.
How long should a beginner stay in cold water?
Cleveland Clinic suggests one or two minutes for beginners and five minutes at most. Treat that as a ceiling, not a goal.
Does ozone mean I never have to change the water?
No. Ozone leaves no lasting disinfectant in the water. Follow your manual for water changes and filter care.
Can I add a chiller to the Classic Tub later?
Yes, it has built-in 1/2″ quick-connect fittings. Check that the chiller's specifications match before you buy one.
Do the chiller models need an electrician?
No. Both run on 110V · 1,160W with a standard plug and are No Electrician Required. Use a suitable outlet as the manual describes.
Find your setup
Still deciding? Take the 1-Minute Quiz, or see all our cedar ice baths side by side.
Talk to your doctor before cold plunging if you are pregnant or have a heart condition. Cleveland Clinic.
Sources
- Are 'Cold Plunge' Ice Baths Good for You? Cleveland Clinic, May 2026. clevelandclinic.org
- Cold plunge tanks: Considerations for environmental public health. National Collaborating Centre for Environmental Health, 2024. ncceh.ca
- Ways to Protect Yourself and Others from Shock or Electrocution. U.S. Consumer Product Safety Commission, 2019. cpsc.gov
- Daily Saunas product specifications, October 2026.
